Influenza incidence rates in the NWHU area were significantly different than Ontario rates in 2009, 2012 and 2013. The highest rates in the NWHU area were seen during 2009 (H1N1) and 2013, while rates in 2011 were lower than in the province.
Slightly over half of the cases 2009 to 2013 period were males (55.0%), and about half were in the population aged 19 and under.
Influenza incidence rates, NWHU and Ontario, 2009-2013
Influenza case counts by sex, NWHU, 2009-2013
Influenza case counts, by age group, 2009-2013